The present invention includes novel (7R)-7-(acylamino)-3-(arylthio)-3-cephem-4-carboxylic acids or their pharmacologically acceptable salts which exhibit antibiotic activity against a wide spectrum of organisms including organisms which are resistant to .beta.-lactam antibiotics and are useful as antibacterial agents. The invention also relates to novel intermediates useful for making the novel compounds of the present invention and to novel methods for producing the novel compounds and intermediate compounds.
本发明涉及新型的(7R)-7-(酰胺基)-3-(芳基
硫基)-3-头孢烯-4-
羧酸或其药学上可接受的盐,该化合物对广谱的
生物体表现出抗生素活性,包括对β-内酰胺类抗生素具有抗药性的
生物体,并且可作为抗菌剂使用。本发明还涉及用于制备本发明的新型中间体,以及用于生产新型化合物和中间化合物的新型方法。